Abstract: The invention discloses a steering device comprising a support structure having a central hole and at least two handgrips, at least one of these being mobile, placed in distal positions compared to the central hole and tied to the support structure by means of pivots. The mobile handgrip is rotatable around an axis substantially orthogonal to the plane of the support structure, so as to manually apply thereto a rotating motion around the axis of the column.

Abstract: A vehicle handlebar comprises a tubular body of variable cross-section, the tubular body comprising a central segment (12) intended to be clamped to the vehicle steering column, a pair of end segments (13, 14) intended to form opposing portions for gripping by the vehicle user, and a pair of intermediate segments (15, 16), inclined to the central segment, each of which connects an end segment to the central segment on opposite sides, the tubular body having a generally polygonal cross-section at the intermediate segments, in the central segment a pair of portions (17, 18) of substantially circular cross-section being present to engage the vehicle steering column via clamping means, a portion of generally polygonal cross-section (19) being interposed between said two portions of substantially circular cross-section.

Abstract: A braking disc of a brake of a wheel of vehicles is intended to be fixed to the wheel to be braked and comprises an annular braking track intended to cooperate with pads of the brake for performing braking of the wheel. Along an edge of the braking track of the disc there is present a plurality of notches; at least a notch has an angular distance from the successive adjacent notch that is different from the angular distance thereof from the preceding adjacent notch.

Abstract: The invention discloses a steering device comprising a support structure having a central hole and at least two handgrips, at least one of these being mobile, placed in distal positions compared to the central hole and tied to the support structure by means of pivots. The mobile handgrip is rotatable around an axis substantially orthogonal to the plane of the support structure, so as to manually apply thereto a rotating motion around the axis of the column.

Abstract: A motion transmission system for motor vehicles, comprising a motion transmission sprocket between a shaft to which the sprocket is connected and a circulating element engaged on the periphery of the sprocket, the sprocket being provided with a plurality of axial seats each suitable for receiving an axial pin for fixing the sprocket to the shaft, between each pin and the wall of the respective seat there being interposed an annular elastic deformable anti-jerk element fitted on the pin, characterized in that the extension of the seats in a tangential direction with respect to the sprocket is greater than the extent of the seats in a radial direction, each seat being tapered from the center to the periphery of the seat in the tangential directions.

Abstract: A brake for a vehicle wheel provided with a disc comprising an element fixed to the wheel and an annular braking track connected to said element and intended to cooperate with pads that extend along a portion of the track to perform braking. The braking track consists of a sequence of sectors connected to the element fixed to the wheel near a periphery of the braking track and adjacent to one another at a front edge of a sector and a rear edge of the next sector in a preferential direction, the front edge being tilted with respect to the radial direction so that, when the wheel rotates in the preferential direction, portions of a sector nearer said periphery meet the pads before portions that are further away from said periphery.

Abstract: A brake for vehicle wheels comprises a first element integral with the wheel and a second element comprising an annular strip on which brake pads act, said first and second element having respective hollow portions intended to correspond to pairs for forming receiving seats of constraining elements; the constraining element consists of a substantially cylindrical pawl around the side surface of which an elastically deformable annular element is arranged intended to remain interposed between the wall of the seat and the side wall of the pawl to enable corresponding movements between the hollow portion of the first element and the hollow portion of the second element of the brake.

Abstract: A braking disc of a brake of a wheel of vehicles is intended to be fixed to the wheel to be braked and comprises an annular braking track intended to cooperate with pads of the brake for performing braking of the wheel. Along an edge of the braking track of the disc there is present a plurality of notches; at least a notch has an angular distance from the successive adjacent notch that is different from the angular distance thereof from the preceding adjacent notch.

Abstract: An brake disk (10) is provided for use in installation on vehicles (12) or transrotary systems for use in conjunction with brake pads (22). The disk (10) includes an obverse side (40) and a reverse side (42) each of which is provided with a series of alternating protruding segments (44) and indented segments (46). The indented segments (46) on one side of the disk (10) are situated axially opposite protruding segments (44) on the other side. Each protruding segment (44) includes a leading edge (52) for engaging the brake pads (22). The particular shapes and relative circumferential widths of the alternating segments vary depending on particular usage.